When Iowa Department of Natural Resources biologists pulled their nets from the lower Des Moines River this spring, they expected to find familiar species. Instead, they found something almost no one ...

Add Yahoo as a preferred source to see more of our stories on Google. A smalltooth sawfish with its signature long, serrated snout swims through a maze of underwater mangrove roots while sunbeams ...

This man set out to expand his backyard ponds and ended up with one of the rarest prehistoric fish in the world. At a local fish store, he discovered an entire pond filled with paddlefish—ancient ...